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    • 27. 发明授权
    • NAND-type flash memory devices including selection transistors with an anti-punchthrough impurity region and methods of fabricating the same
    • 包括具有抗穿透杂质区域的选择晶体管的NAND型闪存器件及其制造方法
    • US07683421B2
    • 2010-03-23
    • US11849533
    • 2007-09-04
    • Gyoung-Ho BuhSun-Ghil LeeJong-Ryeol YooDeok-Hyung LeeGuk-Hyon Yon
    • Gyoung-Ho BuhSun-Ghil LeeJong-Ryeol YooDeok-Hyung LeeGuk-Hyon Yon
    • H01L29/10
    • H01L27/115H01L27/11521H01L27/11524H01L27/12H01L29/1083H01L29/78
    • A NAND-type flash memory device including selection transistors is provided. The device includes first and second impurity regions formed in a semiconductor substrate, and first and second selection gate patterns disposed on the semiconductor substrate between the first and second impurity regions. The first and second selection gate patterns are disposed adjacent to the first and second impurity regions, respectively. A plurality of cell gate patterns are disposed between the first and second selection gate patterns. A first anti-punchthrough impurity region that surrounds the first impurity region is provided in the semiconductor substrate. The first anti-punchthrough impurity region overlaps with a first edge of the first selection gate pattern adjacent to the first impurity region. A second anti-punchthrough impurity region that surrounds the second impurity region is provided in the semiconductor substrate. The second anti-punchthrough impurity region overlaps with a first edge of the second selection gate pattern adjacent to the second impurity region.
    • 提供了包括选择晶体管的NAND型闪速存储器件。 该器件包括形成在半导体衬底中的第一和第二杂质区,以及设置在第一和第二杂质区之间的半导体衬底上的第一和第二选择栅极图案。 第一和第二选择栅极图案分别与第一和第二杂质区相邻设置。 多个单元栅极图案设置在第一和第二选择栅极图案之间。 在半导体衬底中设置围绕第一杂质区的第一抗穿透杂质区。 第一抗穿透杂质区域与第一选择栅极图案的与第一杂质区域相邻的第一边缘重叠。 在半导体衬底中设置有围绕第二杂质区的第二抗穿透杂质区。 第二抗穿透杂质区域与第二选择栅极图案的与第二杂质区域相邻的第一边缘重叠。